Anxiety : Anxiety means a 'disturbed state' of the body. It is an emotional reaction to some situation in which nervous system and glands play a crucial role. This reaction raises the level of human mind. In medical terminology, anxiety is defined as "apprehension of danger accompanied by restlessness and a feeling of oppression in the epigastrium." It leads to variety of physiological reactions such as• Increased heart rate• Rapid shallow breathing• Sweating• Muscle tension• Drying of mouth.